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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Newport

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

MORE ABOUT THIS CONTAMINANT

 

58

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND80ND
2016ND80ND
2017ND100ND
2018ND80ND
2019ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-061401012-03_TO12ND
2014-01-061401012-08_TO12ND
2014-03-10201403120364AMND
2014-03-10201403120338AMND
2014-05-211402793-06_TO12ND
2014-05-211402793-05_TO12ND
2014-06-16201406180472AMND
2014-06-16201406180453AMND
2014-07-021403537-03_TO12ND
2014-07-021403537-04_TO12ND
2014-07-021403537-05_TO12ND
2014-07-021403537-01_TO12ND
2014-09-15201409180267AMND
2014-09-15201409180291AMND
2014-12-02201412040311AMND
2014-12-02201412040473AMND
2015-01-121501069-08_TO12ND
2015-01-121501069-03_TO12ND
2015-06-011502384-02_TO12ND
2015-06-011502384-01_TO12ND
2015-07-201503232-04_TO12ND
2015-07-201503232-06_TO12ND
2015-07-201503232-05_TO12ND
2015-07-201503232-03_TO12ND
2016-01-111600887-08_TO12ND
2016-01-111600887-02_TO12ND
2016-05-091602070-04_TO12ND
2016-05-091602070-05_TO12ND
2016-07-251603626-02_TO12ND
2016-07-251603626-04_TO12ND
2016-07-251603626-03_TO12ND
2016-07-251603626-01_TO12ND
2017-01-241701020-02_TO12ND
2017-01-251701027-06_TO12ND
2017-05-151702185-02_TO12ND
2017-05-151702185-01_TO12ND
2017-07-101703108-03_TO12ND
2017-07-101703108-02_TO12ND
2017-07-101703108-01_TO12ND
2017-07-101703108-04_TO12ND
2017-10-171710399-02_TO12ND
2017-10-171710399-01_TO12ND
2018-01-161800888-02_TO12ND
2018-01-221800936-07_TO12ND
2018-06-041802314-04_TO12ND
2018-06-041802314-05_TO12ND
2018-07-171803078-03_TO12ND
2018-07-171803078-05_TO12ND
2018-07-171803078-04_TO12ND
2018-07-171803078-02_TO12ND
2019-01-151900857-10_TO12ND
2019-01-151900857-11_TO12ND
2019-05-071901920-05_TO12ND
2019-05-071901920-06_TO12ND
2019-08-061903576-01_TO12ND
2019-08-061903576-03_TO12ND
2019-08-061903576-02_TO12ND
2019-08-291904072-02_TO12ND